Overview Reviews Product Description Just found in an old warehouse!! Dated 1944. Unique brass/porcelain insulator. New in box. Box states Insulator PN# CAL61339. NSN# 5970-00-117-4944. Dated 04/1944. Great collectible item!! Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Brass/Porcelain Insulator Dated 1944 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments